Beading tool



June 24, 1924. 1,499,003

C. S. COLEMAN BEADING TOOL Filed April 17 1922 I 27 244;; 6'. blame-nPatented .lnne 2 192 i.

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READING TOOL.

Application filed April 17, 1922. Serial No. 553,309.

T 0 all whom it may concern. 7

Be it known that CHARLES S. COLEMAN, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Beading Tools,of which the following is a specification.

My invention relates to a device for forming beads or flanges on theends of boiler flues the principal object of my invention being toprovide relatively simple, practical and eflicient tool that may bereadily manipulated and which will be effective in forming that portionof the flue that projects beyond the flue sheet into a bead or flange ofuniform size and contour.

A'further object of my invention is to provide a flue beading tool thatwill perform its intended functions without in anywise affecting orrupturing the joint that is formed between the flue and sheet by theexpanding tool.

A further object of the invention is to provide simple and eflicientmeans whereby the beading tool is firmly retained in the same relativeposition at all points through out its circular path of travel, duringthe formation of a bead on the end of a flue.

With the foregoing and other objects in view, my invention consists incertain novel features of construction and arrangement of parts thatwill be hereinafter more fully described and claimed and illustrated inthe accompanying drawings, in which Figure 1 is a sectional View showingparts of a flue and flue sheet, my improved beading tool, and a portionof a pneumatic hammer that is utilized in operating the tool.

Fig. 2 is a cross section taken on the line 22 of Fig. 1.

Fig. 3 is a perspective view of the hammer or bead forming member of thedevice. Fig. 4 is a perspective view of the guide block for the hammeror bead forming tool.

Fig. 5 is a perspective view of the flue eX- panding tool and itstapered pin or mandrel and which latter serves as a support or journalfor the beading tool guide block.

Fig. 6 is an elevational view of a modified form of the beading toolguide block.

Referring by numerals to the accompanying drawings which illustrate apractical embodiment of my invention, 10 designates a flue sheet havingan opening 11 in which is seated the end of a flue 12. A gasket 13 isseated in the opening 11 between the sheet 10 and flue 12 and the endportion of the latter is expanded in the opening in any suitable mannerpreferably by means of a sectional-cylindrical expanding tool such as14, the sections of which are forced radially outward by means of atapered pin or man drel 15.

7 Obviously, this pin or mandrel when seated in the tool 14 occupies aposition coaxial with the line 12 and the outer end portion 16 of saidmandrel is cylindrical in form so as to serveas a journal for thebeading tool guide block 17 which is formed with an opening 18 thatreceives portion 16 ofmandrel 15. By virtue of this arrangement theguide block is supported so as to revolve about the axis of the mandreland likewise the axis of the flue.

Formed through the upper portion of guide block 17 is an aperture 19,the axis of which is disposed at a slight angle relative to the axis ofopening 18.

Y Arranged for sliding movement through aperture .19 is the cylindricalbody portion 20' of the beading tool, said body being provided on itsforward end with a head 21 and the outer face of the latter beingprovided with a transversely disposed bead forming groove 22.

The rear end portion of the beading tool body is formed into a shank 23that is adapted to be received by the tool engaging member of apneumatic hammer 24.

Formed in theupper portion of block 17 is a longitudinally disposed slot25 into which projects the outer portion of a pin 26 that is seatedinthe tool body 20. Thus the heading tool is mounted for reciprocatorymovement within guide block 17 and retained against rotary movementtherein.

In the operation of my improved beading tool the parts are assembled asillustraed in Fig. 1, and as the pneumatic hammer is operated in theusual manner the blows of the piston or plunger are received by the rearend of shank 23 and as a result the transverse recess 22 in the face ofhead 21 of the tool directly engages the end of the flue that projectsbeyond th sheet and beads the projecting end downwardly onto the face ofthe sheet immediately adjacent to the opening 11.

During this beading operation the hammer is manipulated so that guideblock 17 that performs the functions of a carrier swings about themandrel as an axis and during this movement the heading tool maintainsthe same relative position throughout the entire circular path oftravel. As the expanding device or wedg- A flue beading tool of myimproved construction is comparatively simple, may be easily and cheaplyproduced and may be advantageously employed in the rapid formation vofbeads on the ends of flues seated in flu sheets, without the attendantdanger or liability of breaking or rupturing the oints between theexpanded ends of the fines and the sheets. Obviously, the constructionof the device may b modified in details without departing from thespirit of my invention, the scope of which is set forth in the appendedclaims.

I claim as my invention 1. A flue beading device comprising a memberinsert-able in the end of a flue to be beaded adapted to be expandedinto engagement with the flue, a pin embodied in said member projectingaxially from the end of the flue, a guide block turnable on said pin, areciprocal tool shank slidably carried on said guide block and heldagainst rotation thereon,and a head on said shank having a bead forminggroove adapted to operate on the end of the flue.

2. A flue beading devic comprising a member insertable in the end of aflue to be beaded, adapted to be expanded into engagement with the flue,a pin embodied in said member projecting axially from the end of theflue, a guide block turnable on said pin, a reciprocal tool shankslidably carried on said guide block and held against rotation thereon,and a head on said shank having a bead forming groove adapted to operateon the end of the flue, said guide block being freely revoluble ineither direction around said pin.

3. A flue beading device comprising an expansive member insertable in thend of a fine to be beaded, a pin projecting from said member axiallythereof, a guide block having a pair of openings therein one of which isadapted to slidably receive the outer end of said pin, a tool shankreciprocally mounted in the other opening and held against rotationtherein, and a head on said shank having a bead forming groove on itsouter face adapted to engage the end of a flue in which the expansivemember is inserted.

4. In a flue beading tool, a guide block having a pair of openingstherein, a pin adapted to extend into one of said openings on which theguide block is freely turnable, means for supporting said pin coaxiallywith a this to b beaded, a tool shank slidable longitudinally in theother opening'in said guide block and held a ainst rotation, and a headon said shank having a bead forming groove on its outer face adapted toengage the end of a flue -from which said pin projects.

5. In a flue beading tool, a guide block having a pair of openingstherein, a pin adapted to extend into one oi said openings on which theguide block is freely turnable, means for supporting said pin coaxiallywith a flue to be beaded, a tool shank slidable longitudinally in theother opening in said guide block and held against rotation, and a headon said shank having a bead forming groove on its outer face adapted toengage the end of a due from which said pin projects, said tool shankextending at an angle to the axis of said pin.

CHARLES S. COLEMAN.

